layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x76
  RenderBlock {html} at (0,0) size 800x76
    RenderBody {body} at (8,16) size 784x52
      RenderBlock {p} at (0,0) size 784x18 [bgcolor=#00FF00]
        RenderText {#text} at (0,0) size 484x17
          text run at (0,0) width 406: "This paragraph should have green background because CLASS "
          text run at (406,0) width 78: "contains \"b\""
      RenderBlock {address} at (0,34) size 784x18 [bgcolor=#00FF00]
        RenderInline {span} at (0,0) size 156x17
          RenderText {#text} at (0,0) size 156x17
            text run at (0,0) width 156: "This address should also"
        RenderText {#text} at (155,0) size 5x17
          text run at (155,0) width 5: " "
        RenderInline {span} at (0,0) size 598x17
          RenderText {#text} at (159,0) size 598x17
            text run at (159,0) width 350: "have green background because the selector in the last "
            text run at (508,0) width 249: "rule does not apply to the inner SPANs."
        RenderText {#text} at (0,0) size 0x0